## Principles of Electricity and Electromagnetism |

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Page 411

at any point is constant in direction and proportional in

producing it. If i is of the form i0 cos ut, B will be equal to So cos ut. The cosine

function may be written in terms of the exponential functions as (e""' + e~'"')/2, and

...

at any point is constant in direction and proportional in

**magnitude**to the currentproducing it. If i is of the form i0 cos ut, B will be equal to So cos ut. The cosine

function may be written in terms of the exponential functions as (e""' + e~'"')/2, and

...

Page 442

tan-1 ^1 1 - 2«2(1 - u2LC) 1 From the expression for Z it is evident that if u2 = 1/

2LC, the absolute

to uL and is independent of the setting of R. Hence the effective current to the ...

tan-1 ^1 1 - 2«2(1 - u2LC) 1 From the expression for Z it is evident that if u2 = 1/

2LC, the absolute

**magnitude**of the impedance presented by the circuit is equalto uL and is independent of the setting of R. Hence the effective current to the ...

Page 587

Two vectors are said to be equal if they are equal both in direction and

point of vector B is placed at the terminal point of vector A. C, which is the sum of

these two, ...

Two vectors are said to be equal if they are equal both in direction and

**magnitude**. The process of addition of vectors is defined as follows : The initialpoint of vector B is placed at the terminal point of vector A. C, which is the sum of

these two, ...

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alternating current alternating-current ampere amplifier amplitude angle angular anode antenna applied approximately armature assumed atom axis calculated capacity cathode cell characteristic charge circuit coefficient coil component condenser conducting conductor considered constant curl current flowing curve deflection density determined dielectric dielectric constant direct-current direction discharge effective electric field electromagnetic electromotive force electrons electrostatic element energy equal equation flux force frequency function galvanometer given grid hence impedance induction integral ions known Laplace's equation length linear load magnetic field magnetic induction magnitude maximum measured metal meter negative normal obtained ohms oscillations output parallel phase plane plate polarization positive potential difference potential wave potentiometer produced proportional quantities radiation radius ratio reactance region represents resistance resonant rotation scalar Show shown in Fig solenoid solution surface temperature terminals theorem torque tube unit vector velocity voltage volts wire written zero